Home / 81,964.63-122,811.07-28,627.95

Finding the Fourth Proportional to 81,964.63, 122,811.07 and 28,627.95

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Solution

The fourth proportional to 81,964.63, 122,811.07 and 28,627.95 is: 42,894.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,964.63 : 122,811.07 = 28,627.95 : x
  2. Step 2: Convert to fraction form
    81,964.63/122,811.07 = 28,627.95/x
  3. Step 3: Cross multiply
    81,964.63x = 122,811.07 × 28,627.95
  4. Step 4: Simplify right side
    81,964.63x = 3,515,829,171.41
  5. Step 5: Solve for x
    x = 3,515,829,171.41/81,964.63
  6. Step 6: Final answer
    x = 42,894.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.